Home / 77,012.20-115,510.47-52,211.62

Finding the Fourth Proportional to 77,012.20, 115,510.47 and 52,211.62

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Solution

The fourth proportional to 77,012.20, 115,510.47 and 52,211.62 is: 78,312.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,012.20 : 115,510.47 = 52,211.62 : x
  2. Step 2: Convert to fraction form
    77,012.20/115,510.47 = 52,211.62/x
  3. Step 3: Cross multiply
    77,012.20x = 115,510.47 × 52,211.62
  4. Step 4: Simplify right side
    77,012.20x = 6,030,988,765.66
  5. Step 5: Solve for x
    x = 6,030,988,765.66/77,012.20
  6. Step 6: Final answer
    x = 78,312.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.